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3. Installing the appliance
NTI recommends that the connections be made in
the following order to ensure ease of installation,
given the limited space in the piping cabinet:
•
Ductwork (could also be last)
•
Condensate drain
•
Domestic water (Inlet, then Outlet)
•
Gas supply
•
Electrical
3.1 Choosing an installation location
This appliance must be installed indoors, in a dry
location free of dust and debris.
When choosing an installation location, you
must ensure that the location provides adequate
clearance for the appliance (including ductwork),
adequate venting and drainage options, and
sufficient access to gas, water, and electrical
supplies. Carefully consider the following factors
when choosing an installation location:
Water quality
The following table shows the maximum
contaminant levels allowed, based on the EPA
National Secondary Drinking Water Regulations
(40 CFR Part 143.3). If you suspect that your water
is contaminated in any way, discontinue use of the
appliance and contact an authorized technician or
licensed professional.
Failure to do so could void the warranty.
Contaminant
Total Hardness
Aluminum
Chloride
Copper
Iron
Manganese
pH
Sulfate
Total Dissolved Solids (TDS) Up to 500 mg/l
Zinc
Chlorine
Maximum Allowable Level
Up to 200 mg/l (12 grains/gal.)
0.05 to 0.2 mg/l
Up to 250 mg/l
Up to 1.0 mg/l
Up to 0.3 mg/l
Up to 0.05 mg/l
6.5 to 8.5
Up to 205 mg/l
Up to 5 mg/l
Up to 4 mg/l
Adequate drainage
Maintain proper clearances from any openings in
●
the building.
Install the appliance with a minimum clearance
●
of 12 in (300 mm) above an exterior grade, or as
required by local codes.
Maintain a minimum clearance of 4 ft (1.2 m)
●
from heating and cooling vents.
Do not enclose the vent termination.
●
Install the exhaust vent in an area that is free from
●
obstructions and does not allow the exhaust to
accumulate.
Do not install the appliance where moisture from
●
the exhaust may discolor or damage walls.
Do not install the appliance in bathrooms,
●
bedrooms, or any other occupied rooms that are
normally kept closed or that are not adequately
ventilated.
Proximity to fixtures and other appliances
Install the appliance near fixtures that deliver or use
hot water, such as bathroom, kitchen, and laundry
room faucets. Select a location that minimizes the
water piping required between major fixtures. If
the distances are long or the user requires "instant"
hot water, we recommend running a recirculation
line back to the appliance from the furthest fixture.
Insulate as much of the hot water supply and
recirculation lines as possible.
Additionally, take care to locate the appliance such
that the supply and return ductwork can be installed
efficiently, to limit noise and power consumption.
Combustion air quality
Do not install the appliance in areas where dust
●
and debris may accumulate or where hair sprays,
spray detergents, chlorine, or similar chemicals are
used.
Do not install the appliance in areas where
●
gasoline or other flammables are used or stored.
Ensure that combustible materials are stored away
●
from the appliance and that hanging laundry
or similar items do not obstruct access to the
appliance or its venting.
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